Messages in this thread | | | Date | Thu, 10 Nov 2016 17:32:25 +0100 | From | Pavel Machek <> | Subject | Re: [PATCH][RFC v7] timekeeping: Ignore the bogus sleep time if pm_trace is enabled |
| |
On Thu 2016-11-10 12:55:53, Chen Yu wrote: > Previously we encountered some memory overflow issues due to > the bogus sleep time brought by inconsistent rtc, which is > triggered when pm_trace is enabled, and we have fixed it > in recent kernel. However it's improper in the first place > to call __timekeeping_inject_sleeptime() in case that pm_trace > is enabled simply because that "hash" time value will wreckage > the timekeeping subsystem. > > This patch is originally written by Thomas, which would bypass > the bogus rtc interval when pm_trace is enabled. > Meanwhile, if system succeed to resume back with pm_trace set, the > users are warned to adjust the bogus rtc either by ntp-date or rdate, > by resetting pm_trace_rtc_abused to false, otherwise above tools might > not work as expected. > > Originally-from: Thomas Gleixner <tglx@linutronix.de> > Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> > Cc: John Stultz <john.stultz@linaro.org> > Cc: Xunlei Pang <xlpang@redhat.com> > Cc: Ingo Molnar <mingo@redhat.com> > Cc: Len Brown <lenb@kernel.org> > Cc: "H. Peter Anvin" <hpa@zytor.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
-- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html [unhandled content-type:application/pgp-signature] | |